Absorbent structures comprising post-crosslinked water-absorbent articles

US8518539B2 · kind B2 · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• Axel Meyer · Frankfurt am Main, DE
• Michaela Monika Czupik · Cincinnati, US
• Robin Lynn McKiernan · Mason, US
• Thomas Daniel · Waldsee, DE
• Yvonne Hagen · Waldsee, DE
• Ulrich Riegel · Landstuhl, DE
• Dieter Hermeling · Haßloch, DE
• Stefan Bruhns · Mannheim, DE

Key dates

• Filing date: Oct 20, 2011
• Grant date: Aug 27, 2013
• Expiry date: Oct 20, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2998
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Absorbent structures comprising vacuum-treated (optionally coated) post-crosslinked water-absorbing polymeric particles, obtainable by vacuum-treating and optionally plasma-treating post-crosslinked water-absorbent polymeric particles (that may optionally be coated), the resulting vacuum-treated post-crosslinked water-absorbing polymeric particles having an improved absorption, whilst having good gel bed permeability.